TY  - BOOK
AU  - Purohit, S.S. 
AU  - Shammi, Q.J.
AU  - Agrawal, A.K. 
TI  - Environmental science : A New Approach 
SN  - 9788188826148
U1  - 631.583 PUR- T 
PY  - 2017///
CY  - Jodhpur
PB  - Student edition
ER  -